US20050084298A1 - Toner cartridge - Google Patents
Toner cartridge Download PDFInfo
- Publication number
- US20050084298A1 US20050084298A1 US10/896,945 US89694504A US2005084298A1 US 20050084298 A1 US20050084298 A1 US 20050084298A1 US 89694504 A US89694504 A US 89694504A US 2005084298 A1 US2005084298 A1 US 2005084298A1
- Authority
- US
- United States
- Prior art keywords
- guide member
- coupling
- toner
- housing
- toner cartridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
- G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
- G03G15/0812—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the developer regulating means, e.g. structure of doctor blade
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/08—Details of powder developing device not concerning the development directly
- G03G2215/0855—Materials and manufacturing of the developing device
- G03G2215/0866—Metering member
Definitions
- the present general inventive concept relates to a toner cartridge supplying toner to an electrophotographic printer, and more particularly, to a toner cartridge having an improved guide member, which guides the toner supply.
- an electrophotographic printer is an apparatus that forms an electrostatic latent image by scanning light onto a photosensitive medium which is charged to a predetermined electric potential, develops the image with a toner of a predetermined color, and transfers and fuses the developed image on a sheet of paper.
- the electrophotographic printers can be classified into a liquid type electrophotographic printer and a dry type electrophotographic printer according to the type of developer.
- the liquid type electrophotographic printer uses a developer in which a liquid carrier includes distributed powder toner.
- the dry type electrophotographic printer uses a binary developer including a powder type carrier and a toner or a unitary developer including the toner only.
- the electrophotographic printer can be classified into a mono-color printer and a full-color printer.
- the mono-color printer uses one toner cartridge of black color
- the color printer uses four toner cartridges of yellow, magenta, cyan, and black colors.
- FIG. 1 is a schematic cross-sectional view illustrating a conventional toner cartridge for the dry type electrophotographic printer
- FIG. 2 is a view illustrating a coupled structure of a guide member shown in FIG. 1 .
- the conventional toner cartridge includes a housing 11 including a toner 10 of a predetermined color, a developing roller 13 that develops an image, a supplying roller 15 that supplies the toner 10 to the developing roller 13 , and a guide member 17 that is disposed on a lower portion of the supplying roller 15 to guide the toner supply.
- the developing roller 13 is separated a predetermined distance from a photosensitive medium 20 , and supplies the toner 10 to the photosensitive medium 20 to form the image.
- the guide member 17 guides the toner so as to be stably supplied to the developing roller 13 , and is installed on the housing 11 through the coupled structure shown in FIG. 2 .
- coupling recesses 17 a are formed on both ends of the guide member 17 , and the housing 11 includes a penetration hole 11 a for installing the guide member 17 at a predetermined position thereof.
- the guide member 17 is coupled to the housing 11 using a fixing pin 18 . That is, the guide member 17 is disposed so that the coupling recesses 17 a correspond to the penetration hole 11 a, and is fixed in the housing 11 by coupling the fixing pin 18 from the external side of the housing 11 .
- the conventional toner cartridge uses the additional fixing pin to fix the guide member in the housing, the number of elements and fabrication costs increase.
- the present general inventive concept provides a toner cartridge including a guide member having an improved coupling structure.
- a toner cartridge including a housing, in which a toner of a predetermined color is filled, including a first coupling portion and a second coupling portion that are formed on predetermined positions of an inner wall of the housing; a developing roller, a part of which is exposed outside of the housing, installed rotatably on the housing to supply the toner to a photosensitive medium and develop an image; a supplying roller that attaches the toner onto the developing roller; and a guide member that guides the toner supply and is coupled to the first and second coupling portions. Both ends of the guide member are coupled to the first and second coupling portions in a state where the guide member is bent so that is can be installed in the housing.
- FIG. 1 is a cross-sectional view of a toner cartridge of a dry type electrophotographic printer according to the conventional art
- FIG. 2 is a schematic cross-sectional view of a coupling structure of a guide member shown in FIG. 1 ;
- FIG. 3 is a perspective view of a toner cartridge according to an embodiment of the present general inventive concept
- FIG. 4 is a cross-sectional view of a coupling structure of a guide member shown in FIG. 3 ;
- FIG. 5 is a view of a coupling operation of the guide member for a housing shown in FIG. 3 ;
- FIG. 6 is a cross-sectional view of a toner cartridge according to another embodiment of the present general inventive concept.
- FIG. 7 is a cross-sectional view of a toner cartridge according to another embodiment of the present general inventive concept.
- a toner cartridge according to an embodiment of the present general inventive concept includes a housing 30 , a developing roller 41 installed on the housing 30 , a supplying roller 43 , and a guide member 45 .
- the developing roller 41 is rotatably installed on the housing 30 such that a certain surface is exposed outside of the housing 30 .
- the developing roller 41 supplies the toner to a photosensitive medium (not shown) and develops an image using an electric potential difference between the developing roller and the photosensitive medium.
- the housing 30 includes an inner space where the toner of a predetermined color is filled.
- an agitator 51 and a recovery member 53 are installed in the inner space of the housing 30 .
- the agitator 51 rotates to transmit the filled toner and the recovery member 53 collects the remaining toner.
- the housing 30 includes a first coupling portion 31 a and a second coupling portion 31 b, on which the guide member 45 is installed, on inner sides thereof.
- the first and second coupling portions 31 a and 31 b can be coupling recesses that are formed in the inner walls of the housing 30 .
- the housing 30 may further include a pair of buffer members 35 that are installed on the inner walls of the housing at coupling positions of the guide member 45 .
- the buffer members 35 may be in the form of sponge-like structures.
- Each of the buffer members 35 can be installed on a respective inner wall at the coupling position of the guide member 45 , and first coupling openings 37 can be formed at positions corresponding to the first and second coupling portions 31 a and 31 b.
- each buffer member 35 may include second and third coupling openings 38 a and 38 b, respectively, to which the supplying roller 43 and the recovery member 53 may be coupled.
- the guide member 45 guides the toner that is transmitted by the agitator 51 so as to be supplied to the supplying roller 43 and the developing roller 41 .
- the guide member 45 includes coupling protrusions 46 that protrude from the sides thereof so as to be inserted into the coupling openings 37 and the first and second coupling portions 31 a and 31 b. Also, it is desirable that the guide member 45 further includes a controlling blade 47 that is coupled on an upper surface thereof so as to control the toner supplying path. Both ends of the guide member 45 can be inserted into the coupling recesses of the first and second coupling portions 31 a and 31 b directly via the above coupling protrusions 46 .
- the guide member 45 is manufactured using synthetic resin having a predetermined elastic force so that the guide member 45 returns to its original position when an applied external pressure is released.
- the guide member 45 when the guide member 45 is installed on the housing 30 , the guide member 45 may be bent by pushing the guide member 45 toward the direction of the arrow in FIG. 5 .
- gaps g 1 and g 2 may be formed as shown in FIG. 5 .
- first and second coupling portions 31 a and 31 b are formed as recesses, however, shapes of the first and second coupling portions are not limited to the recessed shape. Further, only one of the first and second coupling portions 31 a and 31 b can be formed as a recess.
- a toner cartridge according to another embodiment of the present general inventive concept is characteristic in that the structure of first and second coupling portions 31 a and 31 b and a guide member are modified as compared to the previous embodiment of the present general inventive concept. Thus, detailed descriptions of the other elements will be omitted herein.
- a housing 130 includes first and second coupling portions 131 a and 131 b, on which a guide member 145 is installed on inner walls thereof.
- the first and second coupling portions 131 a and 131 b are coupling protrusions that protrude out from the inner wall of the housing 130 .
- the guide member 145 includes coupling recesses 146 at positions corresponding to the first and second coupling portions 131 a and 131 b.
- the guide member 145 is installed on the housing 130 in a similar way as shown in FIG. 5 . That is, the coupling recesses 146 formed on both sides of the guide member 145 are disposed to face the coupling protrusions of the first and second coupling portions 131 a and 131 b, and the guide member 145 can be bent (or flexed) by a pressure applied thereto. When the applied pressure is released from the guide member 45 , the guide member 145 returns to its original position such that the first and second coupling portions 131 a and 131 b become inserted into the respective coupling recesses 146 , and the coupling procedure is completed.
- first and second coupling portions 131 a and 131 b are formed as the protrusions and the guide member 145 includes the coupling recesses, however, this is merely an example. That is, one of the first and second coupling portions 131 a and 131 b can be formed as the coupling protrusion, and the guide member 145 can include the coupling recess on one side thereof. It is to be noted that any other similar structure that performs the intended coupling operations as described above may be used as an alternative to those described above.
- a toner cartridge according to yet another embodiment of the present general inventive concept has a different structure from those of the previous embodiments with respect to the first and second coupling portions and the guide member coupled to the first and second coupling portions, and thus detailed descriptions for the other elements will be omitted.
- a housing 230 includes a first coupling portion 231 a and a second coupling portion 231 b, on which a guide member 245 is installed, on opposite respective inner walls thereof.
- the first and second coupling portions 231 a and 231 b protrude from the respective inner walls of the housing 230 , and are formed as coupling guide protrusions having spaces 233 a therein.
- the guide member 245 of this embodiment includes coupling protrusions 246 on both sides thereof so that the coupling protrusions 246 are inserted between the space formed between the first and second coupling portions 231 a and 231 b.
- the guide member 245 may not include the coupling protrusions 246 , and both ends of the guide member 245 can be inserted in the space between the coupling guide protrusions.
- the guide member 245 can be installed within the housing 230 in a similar manner as that shown in FIG. 5 .
- first and second coupling portions 231 a and 231 b may be formed as the coupling guide protrusions having the spaces 233 a therein, however, the above shapes are merely examples. That is, only one of the first and second coupling portions 231 a and 231 b may be formed as the coupling protrusion.
- the guide member can be directly installed on the housing without using an additional fixing pin, thus reducing the steps in a manufacturing process and assembling costs.
- the installation position of the guide member can be adjusted accurately, and thus the toner can be supplied stably to the developing roller and the printing quality can be improved.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
Description
- This application claims the priority of Korean Patent Application No. 2003-72798, filed on Oct. 18, 2003, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference.
- 1. Field of the Invention
- The present general inventive concept relates to a toner cartridge supplying toner to an electrophotographic printer, and more particularly, to a toner cartridge having an improved guide member, which guides the toner supply.
- 2. Description of the Related Art
- In general, an electrophotographic printer is an apparatus that forms an electrostatic latent image by scanning light onto a photosensitive medium which is charged to a predetermined electric potential, develops the image with a toner of a predetermined color, and transfers and fuses the developed image on a sheet of paper.
- The electrophotographic printers can be classified into a liquid type electrophotographic printer and a dry type electrophotographic printer according to the type of developer. The liquid type electrophotographic printer uses a developer in which a liquid carrier includes distributed powder toner. The dry type electrophotographic printer uses a binary developer including a powder type carrier and a toner or a unitary developer including the toner only.
- Also, the electrophotographic printer can be classified into a mono-color printer and a full-color printer. The mono-color printer uses one toner cartridge of black color, and the color printer uses four toner cartridges of yellow, magenta, cyan, and black colors.
-
FIG. 1 is a schematic cross-sectional view illustrating a conventional toner cartridge for the dry type electrophotographic printer, andFIG. 2 is a view illustrating a coupled structure of a guide member shown inFIG. 1 . - Referring to
FIG. 1 , the conventional toner cartridge includes ahousing 11 including atoner 10 of a predetermined color, a developingroller 13 that develops an image, a supplyingroller 15 that supplies thetoner 10 to the developingroller 13, and aguide member 17 that is disposed on a lower portion of the supplyingroller 15 to guide the toner supply. - The developing
roller 13 is separated a predetermined distance from aphotosensitive medium 20, and supplies thetoner 10 to thephotosensitive medium 20 to form the image. - The
guide member 17 guides the toner so as to be stably supplied to the developingroller 13, and is installed on thehousing 11 through the coupled structure shown inFIG. 2 . - Referring to
FIG. 2 ,coupling recesses 17 a are formed on both ends of theguide member 17, and thehousing 11 includes apenetration hole 11 a for installing theguide member 17 at a predetermined position thereof. Theguide member 17 is coupled to thehousing 11 using afixing pin 18. That is, theguide member 17 is disposed so that thecoupling recesses 17 a correspond to thepenetration hole 11 a, and is fixed in thehousing 11 by coupling thefixing pin 18 from the external side of thehousing 11. - Therefore, since the conventional toner cartridge uses the additional fixing pin to fix the guide member in the housing, the number of elements and fabrication costs increase.
- Also, since the assembling process is complex, an error in the coupling position may occur when the guide member is installed. Accordingly, control of the amount of toner supplied to the developing roller may be affected, and the printed image quality may be degraded.
- The present general inventive concept provides a toner cartridge including a guide member having an improved coupling structure.
- Additional aspects and advantages of the present general inventive concept will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the general inventive concept.
- The foregoing and/or other aspects and advantages of the present general inventive concept are achieved by providing a toner cartridge including a housing, in which a toner of a predetermined color is filled, including a first coupling portion and a second coupling portion that are formed on predetermined positions of an inner wall of the housing; a developing roller, a part of which is exposed outside of the housing, installed rotatably on the housing to supply the toner to a photosensitive medium and develop an image; a supplying roller that attaches the toner onto the developing roller; and a guide member that guides the toner supply and is coupled to the first and second coupling portions. Both ends of the guide member are coupled to the first and second coupling portions in a state where the guide member is bent so that is can be installed in the housing.
- These and/or other aspects and advantages of the present general inventive concept will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
-
FIG. 1 is a cross-sectional view of a toner cartridge of a dry type electrophotographic printer according to the conventional art; -
FIG. 2 is a schematic cross-sectional view of a coupling structure of a guide member shown inFIG. 1 ; -
FIG. 3 is a perspective view of a toner cartridge according to an embodiment of the present general inventive concept; -
FIG. 4 is a cross-sectional view of a coupling structure of a guide member shown inFIG. 3 ; -
FIG. 5 is a view of a coupling operation of the guide member for a housing shown inFIG. 3 ; -
FIG. 6 is a cross-sectional view of a toner cartridge according to another embodiment of the present general inventive concept; and -
FIG. 7 is a cross-sectional view of a toner cartridge according to another embodiment of the present general inventive concept. - Reference will now be made in detail to the embodiments of the present general inventive concept, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The embodiments are described below in order to explain the present general inventive concept by referring to the figures.
- Referring to
FIGS. 3 and 4 , a toner cartridge according to an embodiment of the present general inventive concept includes ahousing 30, a developingroller 41 installed on thehousing 30, a supplyingroller 43, and aguide member 45. - The developing
roller 41 is rotatably installed on thehousing 30 such that a certain surface is exposed outside of thehousing 30. The developingroller 41 supplies the toner to a photosensitive medium (not shown) and develops an image using an electric potential difference between the developing roller and the photosensitive medium. - The
housing 30 includes an inner space where the toner of a predetermined color is filled. Here, anagitator 51 and arecovery member 53 are installed in the inner space of thehousing 30. Theagitator 51 rotates to transmit the filled toner and therecovery member 53 collects the remaining toner. Thehousing 30 includes afirst coupling portion 31 a and asecond coupling portion 31 b, on which theguide member 45 is installed, on inner sides thereof. The first andsecond coupling portions housing 30. - It is an aspect of the general inventive concept that the
housing 30 may further include a pair ofbuffer members 35 that are installed on the inner walls of the housing at coupling positions of theguide member 45. Thebuffer members 35 may be in the form of sponge-like structures. Each of thebuffer members 35 can be installed on a respective inner wall at the coupling position of theguide member 45, andfirst coupling openings 37 can be formed at positions corresponding to the first andsecond coupling portions buffer member 35 may include second andthird coupling openings roller 43 and therecovery member 53 may be coupled. - The
guide member 45 guides the toner that is transmitted by theagitator 51 so as to be supplied to the supplyingroller 43 and the developingroller 41. Theguide member 45 includescoupling protrusions 46 that protrude from the sides thereof so as to be inserted into thecoupling openings 37 and the first andsecond coupling portions guide member 45 further includes a controllingblade 47 that is coupled on an upper surface thereof so as to control the toner supplying path. Both ends of theguide member 45 can be inserted into the coupling recesses of the first andsecond coupling portions above coupling protrusions 46. - It is an aspect of the general inventive concept that the
guide member 45 is manufactured using synthetic resin having a predetermined elastic force so that theguide member 45 returns to its original position when an applied external pressure is released. - Therefore, as shown in
FIG. 5 , when theguide member 45 is installed on thehousing 30, theguide member 45 may be bent by pushing theguide member 45 toward the direction of the arrow inFIG. 5 . Here, gaps g1 and g2 may be formed as shown inFIG. 5 . Then, when thecoupling protrusions 46 are positioned at thecoupling openings 37 and the first andsecond coupling portions guide member 45 returns to its original position, as shown inFIG. 1 , and the coupling procedure is complete. - In the above described embodiment, the first and
second coupling portions second coupling portions - A toner cartridge according to another embodiment of the present general inventive concept is characteristic in that the structure of first and
second coupling portions - Referring to
FIG. 6 , ahousing 130 according to the present embodiment includes first andsecond coupling portions guide member 145 is installed on inner walls thereof. Here, the first andsecond coupling portions housing 130. Theguide member 145 includes coupling recesses 146 at positions corresponding to the first andsecond coupling portions - The
guide member 145 is installed on thehousing 130 in a similar way as shown inFIG. 5 . That is, the coupling recesses 146 formed on both sides of theguide member 145 are disposed to face the coupling protrusions of the first andsecond coupling portions guide member 145 can be bent (or flexed) by a pressure applied thereto. When the applied pressure is released from theguide member 45, theguide member 145 returns to its original position such that the first andsecond coupling portions - In this embodiment, the first and
second coupling portions guide member 145 includes the coupling recesses, however, this is merely an example. That is, one of the first andsecond coupling portions guide member 145 can include the coupling recess on one side thereof. It is to be noted that any other similar structure that performs the intended coupling operations as described above may be used as an alternative to those described above. - A toner cartridge according to yet another embodiment of the present general inventive concept has a different structure from those of the previous embodiments with respect to the first and second coupling portions and the guide member coupled to the first and second coupling portions, and thus detailed descriptions for the other elements will be omitted.
- Referring to
FIG. 7 , ahousing 230 according to this embodiment includes afirst coupling portion 231 a and asecond coupling portion 231 b, on which aguide member 245 is installed, on opposite respective inner walls thereof. The first andsecond coupling portions housing 230, and are formed as coupling guideprotrusions having spaces 233 a therein. Theguide member 245 of this embodiment includescoupling protrusions 246 on both sides thereof so that thecoupling protrusions 246 are inserted between the space formed between the first andsecond coupling portions guide member 245 may not include thecoupling protrusions 246, and both ends of theguide member 245 can be inserted in the space between the coupling guide protrusions. - Therefore, the
guide member 245 can be installed within thehousing 230 in a similar manner as that shown inFIG. 5 . - In the above embodiment of
FIG. 7 , the first andsecond coupling portions spaces 233 a therein, however, the above shapes are merely examples. That is, only one of the first andsecond coupling portions - In the toner cartridge constructed as in the above described various embodiments, the guide member can be directly installed on the housing without using an additional fixing pin, thus reducing the steps in a manufacturing process and assembling costs.
- Also, since the guide member is directly installed in the housing, the installation position of the guide member can be adjusted accurately, and thus the toner can be supplied stably to the developing roller and the printing quality can be improved.
- Although a few embodiments of the present general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the appended claims and their equivalents.
Claims (19)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2003-72798 | 2003-10-18 | ||
KR10-2003-0072798A KR100503095B1 (en) | 2003-10-18 | 2003-10-18 | Toner cartridge |
Publications (2)
Publication Number | Publication Date |
---|---|
US20050084298A1 true US20050084298A1 (en) | 2005-04-21 |
US7233753B2 US7233753B2 (en) | 2007-06-19 |
Family
ID=34510946
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/896,945 Expired - Fee Related US7233753B2 (en) | 2003-10-18 | 2004-07-23 | Toner cartridge and method of attached guide member therein |
Country Status (3)
Country | Link |
---|---|
US (1) | US7233753B2 (en) |
JP (1) | JP2005122191A (en) |
KR (1) | KR100503095B1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5134441A (en) * | 1989-05-30 | 1992-07-28 | Canon Kabushiki Kaisha | Developing device and process cartridge including the device |
US5642186A (en) * | 1994-12-30 | 1997-06-24 | Steven Bruce Michlin | Shim-seal device in rotator assembly of toner hopper |
US5845182A (en) * | 1995-05-23 | 1998-12-01 | Mita Industrial Co., Ltd. | Toner cartridge for an image forming apparatus having stirring rod with bearing |
US5923931A (en) * | 1996-11-15 | 1999-07-13 | Mita Industrial Co., Ltd. | Sealing mechanism and container equipped with the same |
US6212343B1 (en) * | 1998-10-22 | 2001-04-03 | Ricoh Company, Ltd. | Developing device, process cartridge and image forming apparatus that prevent toner leakage |
US6868239B2 (en) * | 2002-06-07 | 2005-03-15 | Sharp Kabushiki Kaisha | Developer detection device and printer |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6051854A (en) * | 1983-08-31 | 1985-03-23 | Toshiba Corp | Developing device |
JPH04156484A (en) * | 1990-10-20 | 1992-05-28 | Ricoh Co Ltd | Developer device |
JPH0519550A (en) * | 1991-07-16 | 1993-01-29 | Konica Corp | Process unit for image forming device |
JPH06258878A (en) | 1993-03-03 | 1994-09-16 | Ricoh Co Ltd | Electrophotographic device |
JP3262484B2 (en) | 1995-10-19 | 2002-03-04 | キヤノン株式会社 | Transfer device |
JPH10254256A (en) | 1997-03-12 | 1998-09-25 | Canon Inc | Image forming device and process cartridge |
JP3619378B2 (en) | 1998-10-22 | 2005-02-09 | 株式会社リコー | Process cartridge, manufacturing method thereof, and image forming apparatus |
JP2003084647A (en) | 2001-09-13 | 2003-03-19 | Brother Ind Ltd | Image forming apparatus and development unit |
-
2003
- 2003-10-18 KR KR10-2003-0072798A patent/KR100503095B1/en not_active IP Right Cessation
-
2004
- 2004-07-23 US US10/896,945 patent/US7233753B2/en not_active Expired - Fee Related
- 2004-10-18 JP JP2004303018A patent/JP2005122191A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5134441A (en) * | 1989-05-30 | 1992-07-28 | Canon Kabushiki Kaisha | Developing device and process cartridge including the device |
US5642186A (en) * | 1994-12-30 | 1997-06-24 | Steven Bruce Michlin | Shim-seal device in rotator assembly of toner hopper |
US5845182A (en) * | 1995-05-23 | 1998-12-01 | Mita Industrial Co., Ltd. | Toner cartridge for an image forming apparatus having stirring rod with bearing |
US5923931A (en) * | 1996-11-15 | 1999-07-13 | Mita Industrial Co., Ltd. | Sealing mechanism and container equipped with the same |
US6212343B1 (en) * | 1998-10-22 | 2001-04-03 | Ricoh Company, Ltd. | Developing device, process cartridge and image forming apparatus that prevent toner leakage |
US6868239B2 (en) * | 2002-06-07 | 2005-03-15 | Sharp Kabushiki Kaisha | Developer detection device and printer |
Also Published As
Publication number | Publication date |
---|---|
US7233753B2 (en) | 2007-06-19 |
KR100503095B1 (en) | 2005-07-21 |
KR20050037311A (en) | 2005-04-21 |
JP2005122191A (en) | 2005-05-12 |
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